class CreateMealPortions < ActiveRecord::Migration[5.0]
  def change
    create_table :meal_portions do |t|
      t.references :meal, foreign_key: true
      t.references :portion, foreign_key: true
      t.string :quantity, null: false, default: "1"
      t.integer :number, 	default: 0
    end
    
    add_index :meal_portions, [:portion_id, :meal_id], unique: true
  end
end